Check out NEKO-NIN exHeart +PLUS Nachi & NEKO-NIN exHeart +PLUS Saiha on Steam! Available in English/Traditional Chinese languages! These are two mini bonus episodes focusing on Nachi and Saiha!
https://store.steampowered.com/app/744520/NEKONIN_exHeart_PLUS_Nachi/
https://store.steampowered.com/app/750990/NEKONIN_exHeart_PLUS_Saiha/
Be sure to check out the sequel, NEKO-NIN exHeart 2! This title introduces two new adorable characters, Maya and Ritsu! Also available in English/Traditional Chinese languages & has Steam card support!
https://store.steampowered.com/app/828580/NEKONIN_exHeart_2/